Double check valve backflow prevention assembly definition

Double check valve backflow prevention assembly means a backflow prevention device consisting of two independently acting internally loaded check valves, four properly located test cocks, and two isolation valves.
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Double check valve backflow prevention assembly or "DC" means an assembly of two independently acting approved check valves, including tightly closing resilient seated shutoff valves attached at each end of the assembly and fitted with properly located resilient seated test cocks. This assembly is designed to protect against a non- health hazard.
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Double check valve backflow prevention assembly means a backflow prevention assembly consisting of two independently acting internally loaded spring check valves, four properly located test cocks, and two isolation valves. Commonly referred to as a DC.
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Examples of Double check valve backflow prevention assembly in a sentence

  • Double check valve backflow prevention assembly shall mean a backflow prevention device composed of two single, independently acting, approved check valves, including tightly closing resilient seated shutoff valves attached at each end of the assembly and fitted with properly located resilient seated test cocks.

  • Double check valve backflow prevention assembly means an assembly composed of two independently acting, approved check valves, including tightly closing resilient seated shutoff valves attached at each end of the assembly and fitted with properly located resilient seated test cocks.


More Definitions of Double check valve backflow prevention assembly

Double check valve backflow prevention assembly means an assembly of two independently acting approved check valves, including tightly closing resilient seated shutoff valves attached at each end of the assembly and fitted with properly located resilient seated test cocks. This assembly is designed to protect against a nonhealth hazard, under both backpressure and backsiphonage conditions. “Double check detector assembly” or “DCDA” means an assembly which consists of two independently operating check valves which are spring-loaded or weighted. The assembly comes complete with a shut-off valve on each side of the checks, as well as test cocks to test the checks for tightness. It shall also be provided with a factory bypass arrangement with a meter and a minimum of an approved double check assembly.
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Double check valve backflow prevention assembly or “DC” means an assembly consisting of two independently-acting internally-loaded check valves, with tightly closing shut-off valves located at each end of the assembly (upstream and downstream of the two check valves), and fitted with test cocks that enable accurate field testing of the assembly. This type of assembly may only be used to isolate low hazard cross- connections. See Diagram 3, Appendix C.
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Double check valve backflow prevention assembly means an assembly of two (2) independently operating spring loaded check valves with tightly closing shut off valves on each side of the check valves, plus properly located test cocks for the testing of each check valve.
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Double check valve backflow prevention assembly means an assembly composed of two independently acting approved check valves including tightly closed resilient seated shutoff valves attached at each end of the assembly and fitted with properly located resilient seated test cocks.
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